American film and television actress, Kathleen Erin "Kate" Walsh has an estimated net worth of $22 million. Walsh is best known for her role as Dr. Addison Montgomery on the ABC dramas Grey's Anatomy and Private Practice.  She may have an impressive list of film and TV roles on her resume, but her primary acting venue was the stage.

Starting out in regional theater in Tucson, AZ, where she went to college, Walsh later got involved with the Piven Theatre Workshop and Shakespeare Repertory in Chicago, as well as the comedy troupe Burn Manhattan in New York. In the mid-'90s, Walsh began slowly made the transition to the screen with appearances on TV shows like Homicide: Life on the Street and Law & Order. She became a regular on The Drew Carey Show in 1997, and in 2001, she took a recurring role on the HBO series The Mind of the Married Man. In 2005, she joined the cast of the ABC hit series Grey's Anatomy, and as the main character in the ABC television series Private Practice, the 2007 spin-off of Grey's Anatomy.

Walsh was born in San Jose, California and grew up in Tucson, Arizona. Her father was an Irish and her maternal grandfather came from Italy. Her mother Angela lives in Nevada and Walsh has four older siblings.

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